651325401 has 16 divisors (see below), whose sum is σ = 965830720. Its totient is φ = 433810080.

The previous prime is 651325391. The next prime is 651325421. The reversal of 651325401 is 104523156.

651325401 is a `hidden beast` number, since 651 + 3 + 2 + 5 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 651325401 - 2⁷ = 651325273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (651325421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19581 + ... + 41061.

It is an arithmetic number, because the mean of its divisors is an integer number (60364420).

Almost surely, 2^651325401 is an apocalyptic number.

It is an amenable number.

651325401 is a deficient number, since it is larger than the sum of its proper divisors (314505319).

651325401 is a wasteful number, since it uses less digits than its factorization.

651325401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22613 (or 22607 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 651325401 is about 25521.0775830489. The cubic root of 651325401 is about 866.8274821072.

Adding to 651325401 its reverse (104523156), we get a palindrome (755848557).

The spelling of 651325401 in words is "six hundred fifty-one million, three hundred twenty-five thousand, four hundred one".