88625821 has 6 divisors (see below), whose sum is σ = 89896766. Its totient is φ = 87372600.

The previous prime is 88625819. The next prime is 88625833. The reversal of 88625821 is 12852688.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66667225 + 21958596 = 8165^2 + 4686^2 .

It is not a de Polignac number, because 88625821 - 2¹ = 88625819 is a prime.

It is a super-2 number, since 2×88625821² = 15709072295848082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88625851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3750 + ... + 13831.

Almost surely, 2^88625821 is an apocalyptic number.

It is an amenable number.

88625821 is a deficient number, since it is larger than the sum of its proper divisors (1270945).

88625821 is an equidigital number, since it uses as much as digits as its factorization.

88625821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17723 (or 17652 counting only the distinct ones).

The product of its digits is 61440, while the sum is 40.

The square root of 88625821 is about 9414.1287966545. The cubic root of 88625821 is about 445.8479325661.

The spelling of 88625821 in words is "eighty-eight million, six hundred twenty-five thousand, eight hundred twenty-one".