1625364257 has 16 divisors (see below), whose sum is σ = 1784760000. Its totient is φ = 1467944640.

The previous prime is 1625364229. The next prime is 1625364259. The reversal of 1625364257 is 7524635261.

It is a cyclic number.

It is not a de Polignac number, because 1625364257 - 2⁸ = 1625364001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625364259) 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, 1519919 + ... + 1520987.

It is an arithmetic number, because the mean of its divisors is an integer number (111547500).

Almost surely, 2^1625364257 is an apocalyptic number.

It is an amenable number.

1625364257 is a deficient number, since it is larger than the sum of its proper divisors (159395743).

1625364257 is a wasteful number, since it uses less digits than its factorization.

1625364257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856.

The product of its digits is 302400, while the sum is 41.

The square root of 1625364257 is about 40315.8065403633. The cubic root of 1625364257 is about 1175.7551824379.

The spelling of 1625364257 in words is "one billion, six hundred twenty-five million, three hundred sixty-four thousand, two hundred fifty-seven".