157790225 has 24 divisors (see below), whose sum is σ = 200933568. Its totient is φ = 122875200.

The previous prime is 157790219. The next prime is 157790291. The reversal of 157790225 is 522097751.

It is not a de Polignac number, because 157790225 - 2¹⁴ = 157773841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162692 + ... + 163658.

It is an arithmetic number, because the mean of its divisors is an integer number (8372232).

Almost surely, 2^157790225 is an apocalyptic number.

It is an amenable number.

157790225 is a deficient number, since it is larger than the sum of its proper divisors (43143343).

157790225 is a wasteful number, since it uses less digits than its factorization.

157790225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 157790225 is about 12561.4579169776. The cubic root of 157790225 is about 540.3726565776.

The spelling of 157790225 in words is "one hundred fifty-seven million, seven hundred ninety thousand, two hundred twenty-five".