1025442431 has 16 divisors (see below), whose sum is σ = 1197812448. Its totient is φ = 869145600.

The previous prime is 1025442377. The next prime is 1025442433. The reversal of 1025442431 is 1342445201.

It is a cyclic number.

It is not a de Polignac number, because 1025442431 - 2⁶ = 1025442367 is a prime.

It is a super-2 number, since 2×1025442431² = 2103064358590379522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025442431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025442433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47525 + ... + 65646.

It is an arithmetic number, because the mean of its divisors is an integer number (74863278).

Almost surely, 2^1025442431 is an apocalyptic number.

1025442431 is a deficient number, since it is larger than the sum of its proper divisors (172370017).

1025442431 is a wasteful number, since it uses less digits than its factorization.

1025442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113242.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1025442431 is about 32022.5300530736. The cubic root of 1025442431 is about 1008.4098858863.

Adding to 1025442431 its reverse (1342445201), we get a palindrome (2367887632).

The spelling of 1025442431 in words is "one billion, twenty-five million, four hundred forty-two thousand, four hundred thirty-one".