1025177972464 has 20 divisors (see below), whose sum is σ = 1986462304704. Its totient is φ = 512542539008.

The previous prime is 1025177972449. The next prime is 1025177972477. The reversal of 1025177972464 is 4642797715201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720512 + ... + 3074335.

Almost surely, 2^{1025177972464} is an apocalyptic number.

It is an amenable number.

1025177972464 is a deficient number, since it is larger than the sum of its proper divisors (961284332240).

1025177972464 is a wasteful number, since it uses less digits than its factorization.

1025177972464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805912 (or 5805906 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 1025177972464 in words is "one trillion, twenty-five billion, one hundred seventy-seven million, nine hundred seventy-two thousand, four hundred sixty-four".