1144664525 has 24 divisors (see below), whose sum is σ = 1432033344. Its totient is φ = 907616000.

The previous prime is 1144664503. The next prime is 1144664567. The reversal of 1144664525 is 5254664411.

It is a happy number.

It is not a de Polignac number, because 1144664525 - 2¹⁸ = 1144402381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2275424 + ... + 2275926.

It is an arithmetic number, because the mean of its divisors is an integer number (59668056).

Almost surely, 2^1144664525 is an apocalyptic number.

It is an amenable number.

1144664525 is a deficient number, since it is larger than the sum of its proper divisors (287368819).

1144664525 is a wasteful number, since it uses less digits than its factorization.

1144664525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141 (or 1136 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 1144664525 is about 33832.8911711666. The cubic root of 1144664525 is about 1046.0667738485.

The spelling of 1144664525 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, five hundred twenty-five".