2492909421025 has 9 divisors (see below), whose sum is σ = 3091217471251. Its totient is φ = 1994321221240.

The previous prime is 2492909421017. The next prime is 2492909421031. The reversal of 2492909421025 is 5201249092942.

The square root of 2492909421025 is 1578895.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 897447391569 + 1595462029456 = 947337^2 + 1263116^2 .

It is not a de Polignac number, because 2492909421025 - 2³ = 2492909421017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2492909421025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7736586 + ... + 8052364.

Almost surely, 2^{2492909421025} is an apocalyptic number.

2492909421025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2492909421025 is the 1578895-th square number.

2492909421025 is the 789448-th centered octagonal number.

It is an amenable number.

2492909421025 is a deficient number, since it is larger than the sum of its proper divisors (598308050226).

2492909421025 is an frugal number, since it uses more digits than its factorization.

2492909421025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631568 (or 315784 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 2492909421025 by its sum of digits (49), we get a square (122152561630225 = 11052265²).

The spelling of 2492909421025 in words is "two trillion, four hundred ninety-two billion, nine hundred nine million, four hundred twenty-one thousand, twenty-five".