725453051 has 4 divisors (see below), whose sum is σ = 756994512. Its totient is φ = 693911592.

The previous prime is 725453039. The next prime is 725453077. The reversal of 725453051 is 150354527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150354527 = 193 ⋅779039.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725453051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725452999 and 725453017.

It is not an unprimeable number, because it can be changed into a prime (725453021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15770696 + ... + 15770741.

It is an arithmetic number, because the mean of its divisors is an integer number (189248628).

Almost surely, 2^725453051 is an apocalyptic number.

725453051 is a deficient number, since it is larger than the sum of its proper divisors (31541461).

725453051 is a wasteful number, since it uses less digits than its factorization.

725453051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31541460.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 725453051 is about 26934.2356676405. The cubic root of 725453051 is about 898.5379764776.

The spelling of 725453051 in words is "seven hundred twenty-five million, four hundred fifty-three thousand, fifty-one".