625042151 has 4 divisors (see below), whose sum is σ = 625569912. Its totient is φ = 624514392.

The previous prime is 625042141. The next prime is 625042157. The reversal of 625042151 is 151240526.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151240526 = 2 ⋅75620263.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625042151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625042151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625042157) 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, 262100 + ... + 264473.

It is an arithmetic number, because the mean of its divisors is an integer number (156392478).

Almost surely, 2^625042151 is an apocalyptic number.

625042151 is a deficient number, since it is larger than the sum of its proper divisors (527761).

625042151 is a wasteful number, since it uses less digits than its factorization.

625042151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527760.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 625042151 is about 25000.8430057868. The cubic root of 625042151 is about 855.0071934919.

Adding to 625042151 its reverse (151240526), we get a palindrome (776282677).

The spelling of 625042151 in words is "six hundred twenty-five million, forty-two thousand, one hundred fifty-one".