25454607025 has 27 divisors (see below), whose sum is σ = 33547491619. Its totient is φ = 19155610880.

The previous prime is 25454607019. The next prime is 25454607037. The reversal of 25454607025 is 52070645452.

The square root of 25454607025 is 159545.

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

It can be written as a sum of positive squares in 13 ways, for example, as 5948574129 + 19506032896 = 77127^2 + 139664^2 .

It is not a de Polignac number, because 25454607025 - 2²³ = 25446218417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13560387 + ... + 13562263.

Almost surely, 2^25454607025 is an apocalyptic number.

25454607025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25454607025 is the 159545-th square number.

25454607025 is the 79773-rd centered octagonal number.

It is an amenable number.

25454607025 is a deficient number, since it is larger than the sum of its proper divisors (8092884594).

25454607025 is an frugal number, since it uses more digits than its factorization.

25454607025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 40.

The spelling of 25454607025 in words is "twenty-five billion, four hundred fifty-four million, six hundred seven thousand, twenty-five".