625742051 has 4 divisors (see below), whose sum is σ = 682627704. Its totient is φ = 568856400.

The previous prime is 625742027. The next prime is 625742083. The reversal of 625742051 is 150247526.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625742051 is a prime.

It is a super-2 number, since 2×625742051² = 783106228779373202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 625741999 and 625742017.

It is not an unprimeable number, because it can be changed into a prime (625762051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28442810 + ... + 28442831.

It is an arithmetic number, because the mean of its divisors is an integer number (170656926).

Almost surely, 2^625742051 is an apocalyptic number.

625742051 is a deficient number, since it is larger than the sum of its proper divisors (56885653).

625742051 is a wasteful number, since it uses less digits than its factorization.

625742051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56885652.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 625742051 is about 25014.8366174956. The cubic root of 625742051 is about 855.3262100092.

Adding to 625742051 its reverse (150247526), we get a palindrome (775989577).

The spelling of 625742051 in words is "six hundred twenty-five million, seven hundred forty-two thousand, fifty-one".