653625451 has 2 divisors, whose sum is σ = 653625452. Its totient is φ = 653625450.

The previous prime is 653625433. The next prime is 653625457. The reversal of 653625451 is 154526356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653625451 - 2¹¹ = 653623403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 653625451.

It is not a weakly prime, because it can be changed into another prime (653625457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326812725 + 326812726.

It is an arithmetic number, because the mean of its divisors is an integer number (326812726).

Almost surely, 2^653625451 is an apocalyptic number.

653625451 is a deficient number, since it is larger than the sum of its proper divisors (1).

653625451 is an equidigital number, since it uses as much as digits as its factorization.

653625451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 37.

The square root of 653625451 is about 25566.0996438643. The cubic root of 653625451 is about 867.8466369344.

The spelling of 653625451 in words is "six hundred fifty-three million, six hundred twenty-five thousand, four hundred fifty-one".