157345772225 has 24 divisors (see below), whose sum is σ = 197383583160. Its totient is φ = 124410176000.

The previous prime is 157345772209. The next prime is 157345772231. The reversal of 157345772225 is 522277543751.

It can be written as a sum of positive squares in 12 ways, for example, as 72850328464 + 84495443761 = 269908^2 + 290681^2 .

It is not a de Polignac number, because 157345772225 - 2⁴ = 157345772209 is a prime.

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, 5818235 + ... + 5845215.

It is an arithmetic number, because the mean of its divisors is an integer number (8224315965).

Almost surely, 2^157345772225 is an apocalyptic number.

It is an amenable number.

157345772225 is a deficient number, since it is larger than the sum of its proper divisors (40037810935).

157345772225 is a wasteful number, since it uses less digits than its factorization.

157345772225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29701 (or 29696 counting only the distinct ones).

The product of its digits is 4116000, while the sum is 50.

The spelling of 157345772225 in words is "one hundred fifty-seven billion, three hundred forty-five million, seven hundred seventy-two thousand, two hundred twenty-five".