25989265025 has 24 divisors (see below), whose sum is σ = 33149794944. Its totient is φ = 20204078400.

The previous prime is 25989265019. The next prime is 25989265031. The reversal of 25989265025 is 52056298952.

It is an interprime number because it is at equal distance from previous prime (25989265019) and next prime (25989265031).

It is not a de Polignac number, because 25989265025 - 2²⁴ = 25972487809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23912 + ... + 229238.

It is an arithmetic number, because the mean of its divisors is an integer number (1381241456).

Almost surely, 2^25989265025 is an apocalyptic number.

25989265025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25989265025 is a deficient number, since it is larger than the sum of its proper divisors (7160529919).

25989265025 is a wasteful number, since it uses less digits than its factorization.

25989265025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205481 (or 205476 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 25989265025 in words is "twenty-five billion, nine hundred eighty-nine million, two hundred sixty-five thousand, twenty-five".