651493525 has 6 divisors (see below), whose sum is σ = 807852002. Its totient is φ = 521194800.

The previous prime is 651493501. The next prime is 651493571. The reversal of 651493525 is 525394156.

It can be written as a sum of positive squares in 3 ways, for example, as 65901924 + 585591601 = 8118^2 + 24199^2 .

It is not a de Polignac number, because 651493525 - 2¹³ = 651485333 is a prime.

It is a Duffinian number.

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, 13029846 + ... + 13029895.

Almost surely, 2^651493525 is an apocalyptic number.

It is an amenable number.

651493525 is a deficient number, since it is larger than the sum of its proper divisors (156358477).

651493525 is a wasteful number, since it uses less digits than its factorization.

651493525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26059751 (or 26059746 counting only the distinct ones).

The product of its digits is 162000, while the sum is 40.

The square root of 651493525 is about 25524.3711969561. The cubic root of 651493525 is about 866.9020592520.

The spelling of 651493525 in words is "six hundred fifty-one million, four hundred ninety-three thousand, five hundred twenty-five".