2621952025 has 135 divisors (see below), whose sum is σ = 4399987263. Its totient is φ = 1548439200.

The previous prime is 2621952019. The next prime is 2621952037. The reversal of 2621952025 is 5202591262.

The square root of 2621952025 is 51205.

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., 943902729 + 1678049296 = 30723^2 + 40964^2 .

It is not a de Polignac number, because 2621952025 - 2³ = 2621952017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 137997466 + ... + 137997484.

Almost surely, 2^2621952025 is an apocalyptic number.

2621952025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2621952025 is the 51205-th square number.

2621952025 is the 25603-rd centered octagonal number.

It is an amenable number.

2621952025 is a deficient number, since it is larger than the sum of its proper divisors (1778035238).

2621952025 is an equidigital number, since it uses as much as digits as its factorization.

2621952025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The cubic root of 2621952025 is about 1378.9279682715.

The spelling of 2621952025 in words is "two billion, six hundred twenty-one million, nine hundred fifty-two thousand, twenty-five".