123747725 has 12 divisors (see below), whose sum is σ = 154969620. Its totient is φ = 98016000.

The previous prime is 123747719. The next prime is 123747731. The reversal of 123747725 is 527747321.

It is an interprime number because it is at equal distance from previous prime (123747719) and next prime (123747731).

It can be written as a sum of positive squares in 6 ways, for example, as 5851561 + 117896164 = 2419^2 + 10858^2 .

It is not a de Polignac number, because 123747725 - 2⁶ = 123747661 is a prime.

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, 21980 + ... + 27029.

It is an arithmetic number, because the mean of its divisors is an integer number (12914135).

Almost surely, 2^123747725 is an apocalyptic number.

It is an amenable number.

123747725 is a deficient number, since it is larger than the sum of its proper divisors (31221895).

123747725 is a wasteful number, since it uses less digits than its factorization.

123747725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49120 (or 49115 counting only the distinct ones).

The product of its digits is 82320, while the sum is 38.

The square root of 123747725 is about 11124.1954765277. The cubic root of 123747725 is about 498.3246929620.

The spelling of 123747725 in words is "one hundred twenty-three million, seven hundred forty-seven thousand, seven hundred twenty-five".