625400399999 has 4 divisors (see below), whose sum is σ = 625440782136. Its totient is φ = 625360017864.

The previous prime is 625400399989. The next prime is 625400400011. The reversal of 625400399999 is 999993004526.

625400399999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-625400399999 is a prime.

It is a super-2 number, since 2×625400399999² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625400399959) 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, 20167829 + ... + 20198814.

It is an arithmetic number, because the mean of its divisors is an integer number (156360195534).

Almost surely, 2^625400399999 is an apocalyptic number.

625400399999 is a deficient number, since it is larger than the sum of its proper divisors (40382137).

625400399999 is a wasteful number, since it uses less digits than its factorization.

625400399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40382136.

The product of its (nonzero) digits is 42515280, while the sum is 65.

The spelling of 625400399999 in words is "six hundred twenty-five billion, four hundred million, three hundred ninety-nine thousand, nine hundred ninety-nine".