1625373730 has 16 divisors (see below), whose sum is σ = 3026558520. Its totient is φ = 627730432.

The previous prime is 1625373721. The next prime is 1625373751. The reversal of 1625373730 is 373735261.

It can be written as a sum of positive squares in 4 ways, for example, as 786634209 + 838739521 = 28047^2 + 28961^2 .

It is a super-2 number, since 2×1625373730² = 5283679524348225800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1625373730.

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, 2802079 + ... + 2802658.

Almost surely, 2^1625373730 is an apocalyptic number.

1625373730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1625373730 is a deficient number, since it is larger than the sum of its proper divisors (1401184790).

1625373730 is a wasteful number, since it uses less digits than its factorization.

1625373730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5604773.

The product of its (nonzero) digits is 79380, while the sum is 37.

The square root of 1625373730 is about 40315.9240251293. The cubic root of 1625373730 is about 1175.7574666248.

The spelling of 1625373730 in words is "one billion, six hundred twenty-five million, three hundred seventy-three thousand, seven hundred thirty".