155070725 has 12 divisors (see below), whose sum is σ = 192633504. Its totient is φ = 123833520.

The previous prime is 155070709. The next prime is 155070731. The reversal of 155070725 is 527070551.

It is not a de Polignac number, because 155070725 - 2⁴ = 155070709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155070691 and 155070700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9392 + ... + 19958.

It is an arithmetic number, because the mean of its divisors is an integer number (16052792).

Almost surely, 2^155070725 is an apocalyptic number.

It is an amenable number.

155070725 is a deficient number, since it is larger than the sum of its proper divisors (37562779).

155070725 is a wasteful number, since it uses less digits than its factorization.

155070725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11164 (or 11159 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 155070725 is about 12452.7396584045. The cubic root of 155070725 is about 537.2502246725.

The spelling of 155070725 in words is "one hundred fifty-five million, seventy thousand, seven hundred twenty-five".