71490625 has 12 divisors (see below), whose sum is σ = 89361468. Its totient is φ = 57190000.

The previous prime is 71490607. The next prime is 71490637. The reversal of 71490625 is 52609417.

It can be written as a sum of positive squares in 6 ways, for example, as 45265984 + 26224641 = 6728^2 + 5121^2 .

It is not a de Polignac number, because 71490625 - 2¹⁵ = 71457857 is a prime.

It is a super-2 number, since 2×71490625² = 10221818925781250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8314 + ... + 14563.

It is an arithmetic number, because the mean of its divisors is an integer number (7446789).

Almost surely, 2^71490625 is an apocalyptic number.

It is an amenable number.

71490625 is a deficient number, since it is larger than the sum of its proper divisors (17870843).

71490625 is an frugal number, since it uses more digits than its factorization.

71490625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22902 (or 22882 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 71490625 is about 8455.2128890998. The cubic root of 71490625 is about 415.0333838727.

The spelling of 71490625 in words is "seventy-one million, four hundred ninety thousand, six hundred twenty-five".