123634425 has 48 divisors (see below), whose sum is σ = 219360960. Its totient is φ = 61251840.

The previous prime is 123634409. The next prime is 123634429. The reversal of 123634425 is 524436321.

It is not a de Polignac number, because 123634425 - 2⁴ = 123634409 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123634392 and 123634401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123634429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74707 + ... + 76343.

It is an arithmetic number, because the mean of its divisors is an integer number (4570020).

Almost surely, 2^123634425 is an apocalyptic number.

123634425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123634425 is a deficient number, since it is larger than the sum of its proper divisors (95726535).

123634425 is a wasteful number, since it uses less digits than its factorization.

123634425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 1717 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 123634425 is about 11119.1018072504. The cubic root of 123634425 is about 498.1725624141.

The spelling of 123634425 in words is "one hundred twenty-three million, six hundred thirty-four thousand, four hundred twenty-five".