157143725 has 6 divisors (see below), whose sum is σ = 194858250. Its totient is φ = 125714960.

The previous prime is 157143713. The next prime is 157143761. The reversal of 157143725 is 527341751.

It can be written as a sum of positive squares in 3 ways, for example, as 243049 + 156900676 = 493^2 + 12526^2 .

It is not a de Polignac number, because 157143725 - 2¹⁶ = 157078189 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 3142850 + ... + 3142899.

It is an arithmetic number, because the mean of its divisors is an integer number (32476375).

Almost surely, 2^157143725 is an apocalyptic number.

It is an amenable number.

157143725 is a deficient number, since it is larger than the sum of its proper divisors (37714525).

157143725 is an equidigital number, since it uses as much as digits as its factorization.

157143725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6285759 (or 6285754 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 157143725 is about 12535.6980260375. The cubic root of 157143725 is about 539.6336392461.

The spelling of 157143725 in words is "one hundred fifty-seven million, one hundred forty-three thousand, seven hundred twenty-five".