1025152331 has 4 divisors (see below), whose sum is σ = 1171602672. Its totient is φ = 878701992.

The previous prime is 1025152319. The next prime is 1025152351. The reversal of 1025152331 is 1332515201.

It is a happy number.

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

It is not a de Polignac number, because 1025152331 - 2⁶ = 1025152267 is a prime.

It is a super-2 number, since 2×1025152331² = 2101874603509467122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1025152297 and 1025152306.

It is not an unprimeable number, because it can be changed into a prime (1025152351) 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, 73225160 + ... + 73225173.

It is an arithmetic number, because the mean of its divisors is an integer number (292900668).

Almost surely, 2^1025152331 is an apocalyptic number.

1025152331 is a deficient number, since it is larger than the sum of its proper divisors (146450341).

1025152331 is an equidigital number, since it uses as much as digits as its factorization.

1025152331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146450340.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1025152331 is about 32018.0001093135. Note that the first 3 decimals coincide. The cubic root of 1025152331 is about 1008.3147830995.

Adding to 1025152331 its reverse (1332515201), we get a palindrome (2357667532).

The spelling of 1025152331 in words is "one billion, twenty-five million, one hundred fifty-two thousand, three hundred thirty-one".