1625136007640 has 32 divisors (see below), whose sum is σ = 3656998962000. Its totient is φ = 649975657344.

The previous prime is 1625136007619. The next prime is 1625136007661. The reversal of 1625136007640 is 467006315261.

It is an interprime number because it is at equal distance from previous prime (1625136007619) and next prime (1625136007661).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2125910 + ... + 2787429.

Almost surely, 2^{1625136007640} is an apocalyptic number.

1625136007640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1625136007640 is an abundant number, since it is smaller than the sum of its proper divisors (2031862954360).

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

1625136007640 is a wasteful number, since it uses less digits than its factorization.

1625136007640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921619 (or 4921615 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 1625136007640 in words is "one trillion, six hundred twenty-five billion, one hundred thirty-six million, seven thousand, six hundred forty".