625430553 has 16 divisors (see below), whose sum is σ = 910140096. Its totient is φ = 378872640.

The previous prime is 625430537. The next prime is 625430557. The reversal of 625430553 is 355034526.

It is not a de Polignac number, because 625430553 - 2⁴ = 625430537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (625430557) 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, 120651 + ... + 125727.

It is an arithmetic number, because the mean of its divisors is an integer number (56883756).

Almost surely, 2^625430553 is an apocalyptic number.

It is an amenable number.

625430553 is a deficient number, since it is larger than the sum of its proper divisors (284709543).

625430553 is a wasteful number, since it uses less digits than its factorization.

625430553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8824.

The product of its (nonzero) digits is 54000, while the sum is 33.

The square root of 625430553 is about 25008.6095775035. The cubic root of 625430553 is about 855.1842576792.

The spelling of 625430553 in words is "six hundred twenty-five million, four hundred thirty thousand, five hundred fifty-three".