25127640025 has 24 divisors (see below), whose sum is σ = 31698362048. Its totient is φ = 19754280000.

The previous prime is 25127639993. The next prime is 25127640037. The reversal of 25127640025 is 52004672152.

It is not a de Polignac number, because 25127640025 - 2⁵ = 25127639993 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, 1778740 + ... + 1792810.

Almost surely, 2^25127640025 is an apocalyptic number.

25127640025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25127640025 is a deficient number, since it is larger than the sum of its proper divisors (6570722023).

25127640025 is a wasteful number, since it uses less digits than its factorization.

25127640025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313 (or 15308 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 25127640025 in words is "twenty-five billion, one hundred twenty-seven million, six hundred forty thousand, twenty-five".