651959025 has 48 divisors (see below), whose sum is σ = 1097769024. Its totient is φ = 341370880.

The previous prime is 651959023. The next prime is 651959029. The reversal of 651959025 is 520959156.

It is not a de Polignac number, because 651959025 - 2¹ = 651959023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (651959023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1099129 + ... + 1099721.

It is an arithmetic number, because the mean of its divisors is an integer number (22870188).

Almost surely, 2^651959025 is an apocalyptic number.

It is an amenable number.

651959025 is a deficient number, since it is larger than the sum of its proper divisors (445809999).

651959025 is a wasteful number, since it uses less digits than its factorization.

651959025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 42.

The square root of 651959025 is about 25533.4883045776. The cubic root of 651959025 is about 867.1084807635.

The spelling of 651959025 in words is "six hundred fifty-one million, nine hundred fifty-nine thousand, twenty-five".