1025125431 has 24 divisors (see below), whose sum is σ = 1504376832. Its totient is φ = 620466000.

The previous prime is 1025125429. The next prime is 1025125463. The reversal of 1025125431 is 1345215201.

It is a happy number.

It is not a de Polignac number, because 1025125431 - 2¹ = 1025125429 is a prime.

It is a super-2 number, since 2×1025125431² = 2101764298565871522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025125471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 380170 + ... + 382856.

It is an arithmetic number, because the mean of its divisors is an integer number (62682368).

Almost surely, 2^1025125431 is an apocalyptic number.

1025125431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1025125431 is a deficient number, since it is larger than the sum of its proper divisors (479251401).

1025125431 is a wasteful number, since it uses less digits than its factorization.

1025125431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3763 (or 3752 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1025125431 is about 32017.5800303521. The cubic root of 1025125431 is about 1008.3059636281.

The spelling of 1025125431 in words is "one billion, twenty-five million, one hundred twenty-five thousand, four hundred thirty-one".