1025355131 has 4 divisors (see below), whose sum is σ = 1035507264. Its totient is φ = 1015203000.

The previous prime is 1025355127. The next prime is 1025355151. The reversal of 1025355131 is 1315535201.

It is a happy number.

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 1025355131 - 2² = 1025355127 is a prime.

It is a super-2 number, since 2×1025355131² = 2102706289336054322, 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 1025355131.

It is not an unprimeable number, because it can be changed into a prime (1025355151) 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, 5075915 + ... + 5076116.

It is an arithmetic number, because the mean of its divisors is an integer number (258876816).

Almost surely, 2^1025355131 is an apocalyptic number.

1025355131 is a deficient number, since it is larger than the sum of its proper divisors (10152133).

1025355131 is a wasteful number, since it uses less digits than its factorization.

1025355131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152132.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1025355131 is about 32021.1669212726. The cubic root of 1025355131 is about 1008.3812684237.

The spelling of 1025355131 in words is "one billion, twenty-five million, three hundred fifty-five thousand, one hundred thirty-one".