1025605131 has 4 divisors (see below), whose sum is σ = 1367473512. Its totient is φ = 683736752.

The previous prime is 1025605129. The next prime is 1025605151. The reversal of 1025605131 is 1315065201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025605131 - 2¹ = 1025605129 is a prime.

It is a super-2 number, since 2×1025605131² = 2103731769467054322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1025605111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170934186 + ... + 170934191.

It is an arithmetic number, because the mean of its divisors is an integer number (341868378).

Almost surely, 2^1025605131 is an apocalyptic number.

1025605131 is a deficient number, since it is larger than the sum of its proper divisors (341868381).

1025605131 is an equidigital number, since it uses as much as digits as its factorization.

1025605131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341868380.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1025605131 is about 32025.0703512108. The cubic root of 1025605131 is about 1008.4632155865.

The spelling of 1025605131 in words is "one billion, twenty-five million, six hundred five thousand, one hundred thirty-one".