101131425 has 18 divisors (see below), whose sum is σ = 181138022. Its totient is φ = 53936640.

The previous prime is 101131417. The next prime is 101131427. The reversal of 101131425 is 524131101.

It can be written as a sum of positive squares in 3 ways, for example, as 28387584 + 72743841 = 5328^2 + 8529^2 .

It is not a de Polignac number, because 101131425 - 2³ = 101131417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101131398 and 101131407.

It is not an unprimeable number, because it can be changed into a prime (101131427) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 224512 + ... + 224961.

Almost surely, 2^101131425 is an apocalyptic number.

101131425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101131425 is a deficient number, since it is larger than the sum of its proper divisors (80006597).

101131425 is a wasteful number, since it uses less digits than its factorization.

101131425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449489 (or 449481 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 101131425 is about 10056.4121335594. The cubic root of 101131425 is about 465.9028590950.

Adding to 101131425 its reverse (524131101), we get a palindrome (625262526).

The spelling of 101131425 in words is "one hundred one million, one hundred thirty-one thousand, four hundred twenty-five".