88400025 has 96 divisors (see below), whose sum is σ = 189630720. Its totient is φ = 39536640.

The previous prime is 88400021. The next prime is 88400029. The reversal of 88400025 is 52000488.

It is an interprime number because it is at equal distance from previous prime (88400021) and next prime (88400029).

It is not a de Polignac number, because 88400025 - 2² = 88400021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (88400021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 250249 + ... + 250601.

It is an arithmetic number, because the mean of its divisors is an integer number (1975320).

Almost surely, 2^88400025 is an apocalyptic number.

It is an amenable number.

88400025 is an abundant number, since it is smaller than the sum of its proper divisors (101230695).

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

88400025 is a wasteful number, since it uses less digits than its factorization.

88400025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 88400025 is about 9402.1287483208. The cubic root of 88400025 is about 445.4689749279.

The spelling of 88400025 in words is "eighty-eight million, four hundred thousand, twenty-five".