25025502493 has 4 divisors (see below), whose sum is σ = 25049090268. Its totient is φ = 25001914720.

The previous prime is 25025502473. The next prime is 25025502517. The reversal of 25025502493 is 39420552052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14470405849 + 10555096644 = 120293^2 + 102738^2 .

It is a cyclic number.

It is not a de Polignac number, because 25025502493 - 2²⁹ = 24488631581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25025502413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11792296 + ... + 11794417.

It is an arithmetic number, because the mean of its divisors is an integer number (6262272567).

Almost surely, 2^25025502493 is an apocalyptic number.

It is an amenable number.

25025502493 is a deficient number, since it is larger than the sum of its proper divisors (23587775).

25025502493 is a wasteful number, since it uses less digits than its factorization.

25025502493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23587774.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 25025502493 in words is "twenty-five billion, twenty-five million, five hundred two thousand, four hundred ninety-three".