25026527409 has 12 divisors (see below), whose sum is σ = 36132975216. Its totient is φ = 15400939632.

The previous prime is 25026527399. The next prime is 25026527411. The reversal of 25026527409 is 90472562052.

It is not a de Polignac number, because 25026527409 - 2⁸ = 25026527153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25026527809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24680487 + ... + 24681500.

It is an arithmetic number, because the mean of its divisors is an integer number (3011081268).

Almost surely, 2^25026527409 is an apocalyptic number.

It is an amenable number.

25026527409 is a deficient number, since it is larger than the sum of its proper divisors (11106447807).

25026527409 is a wasteful number, since it uses less digits than its factorization.

25026527409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49362016 (or 49362003 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 25026527409 in words is "twenty-five billion, twenty-six million, five hundred twenty-seven thousand, four hundred nine".