1025431408 has 10 divisors (see below), whose sum is σ = 1986773384. Its totient is φ = 512715696.

The previous prime is 1025431403. The next prime is 1025431453. The reversal of 1025431408 is 8041345201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025431403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32044716 + ... + 32044747.

Almost surely, 2^1025431408 is an apocalyptic number.

It is an amenable number.

1025431408 is a deficient number, since it is larger than the sum of its proper divisors (961341976).

1025431408 is an equidigital number, since it uses as much as digits as its factorization.

1025431408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64089471 (or 64089465 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1025431408 is about 32022.3579394148. The cubic root of 1025431408 is about 1008.4062725705.

Adding to 1025431408 its reverse (8041345201), we get a palindrome (9066776609).

The spelling of 1025431408 in words is "one billion, twenty-five million, four hundred thirty-one thousand, four hundred eight".