1254564660 has 48 divisors (see below), whose sum is σ = 3518222400. Its totient is φ = 334032384.

The previous prime is 1254564659. The next prime is 1254564667. The reversal of 1254564660 is 664654521.

It is a super-2 number, since 2×1254564660² = 3147864972241831200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254564667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23676 + ... + 55404.

It is an arithmetic number, because the mean of its divisors is an integer number (73296300).

Almost surely, 2^1254564660 is an apocalyptic number.

1254564660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1254564660 is an abundant number, since it is smaller than the sum of its proper divisors (2263657740).

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

1254564660 is a wasteful number, since it uses less digits than its factorization.

1254564660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32400 (or 32398 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 1254564660 is about 35419.8342740335. The cubic root of 1254564660 is about 1078.5269870687.

The spelling of 1254564660 in words is "one billion, two hundred fifty-four million, five hundred sixty-four thousand, six hundred sixty".