64411902025 has 27 divisors (see below), whose sum is σ = 80593174389. Its totient is φ = 51067614720.

The previous prime is 64411902007. The next prime is 64411902043. The reversal of 64411902025 is 52020911446.

The square root of 64411902025 is 253795.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (64411902007) and next prime (64411902043).

It can be written as a sum of positive squares in 4 ways, for example, as 10359371961 + 54052530064 = 101781^2 + 232492^2 .

It is not a de Polignac number, because 64411902025 - 2²³ = 64403513417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 244912044 + ... + 244912306.

Almost surely, 2^64411902025 is an apocalyptic number.

64411902025 is the 253795-th square number.

64411902025 is the 126898-th centered octagonal number.

It is an amenable number.

64411902025 is a deficient number, since it is larger than the sum of its proper divisors (16181272364).

64411902025 is an frugal number, since it uses more digits than its factorization.

64411902025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 64411902025 in words is "sixty-four billion, four hundred eleven million, nine hundred two thousand, twenty-five".