628961250725 has 6 divisors (see below), whose sum is σ = 779911950930. Its totient is φ = 503169000560.

The previous prime is 628961250707. The next prime is 628961250763. The reversal of 628961250725 is 527052169826.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9200262724 + 619760988001 = 95918^2 + 787249^2 .

It is not a de Polignac number, because 628961250725 - 2⁸ = 628961250469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12579224990 + ... + 12579225039.

It is an arithmetic number, because the mean of its divisors is an integer number (129985325155).

Almost surely, 2^628961250725 is an apocalyptic number.

It is an amenable number.

628961250725 is a deficient number, since it is larger than the sum of its proper divisors (150950700205).

628961250725 is a wasteful number, since it uses less digits than its factorization.

628961250725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25158450039 (or 25158450034 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 628961250725 in words is "six hundred twenty-eight billion, nine hundred sixty-one million, two hundred fifty thousand, seven hundred twenty-five".