25495397088 has 48 divisors (see below), whose sum is σ = 76486193280. Its totient is φ = 7284398976.

The previous prime is 25495397087. The next prime is 25495397099. The reversal of 25495397088 is 88079359452.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25495397087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18969118 + ... + 18970461.

It is an arithmetic number, because the mean of its divisors is an integer number (1593462360).

Almost surely, 2^25495397088 is an apocalyptic number.

25495397088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25495397088 is an abundant number, since it is smaller than the sum of its proper divisors (50990796192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25495397088 is a wasteful number, since it uses less digits than its factorization.

25495397088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37939599 (or 37939591 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 25495397088 in words is "twenty-five billion, four hundred ninety-five million, three hundred ninety-seven thousand, eighty-eight".