25460989225 has 81 divisors (see below), whose sum is σ = 37915047333. Its totient is φ = 16911336960.

The previous prime is 25460989207. The next prime is 25460989231. The reversal of 25460989225 is 52298906452.

The square root of 25460989225 is 159565.

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

It can be written as a sum of positive squares in 4 ways, for example, as 936176409 + 24524812816 = 30597^2 + 156604^2 .

It is not a de Polignac number, because 25460989225 - 2¹³ = 25460981033 is a prime.

It is a super-2 number, since 2×25460989225² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 262484377 + ... + 262484473.

Almost surely, 2^25460989225 is an apocalyptic number.

25460989225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25460989225 is the 159565-th square number.

25460989225 is the 79783-rd centered octagonal number.

It is an amenable number.

25460989225 is a deficient number, since it is larger than the sum of its proper divisors (12454058108).

25460989225 is an frugal number, since it uses more digits than its factorization.

25460989225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 25460989225 in words is "twenty-five billion, four hundred sixty million, nine hundred eighty-nine thousand, two hundred twenty-five".