151253025021 has 18 divisors (see below), whose sum is σ = 254146240062. Its totient is φ = 86430299760.

The previous prime is 151253025019. The next prime is 151253025029. The reversal of 151253025021 is 120520352151.

151253025021 is a `hidden beast` number, since 1 + 5 + 125 + 30 + 2 + 502 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 149548491225 + 1704533796 = 386715^2 + 41286^2 .

It is not a de Polignac number, because 151253025021 - 2¹ = 151253025019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151253025029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 171488250 + ... + 171489131.

It is an arithmetic number, because the mean of its divisors is an integer number (14119235559).

Almost surely, 2^151253025021 is an apocalyptic number.

It is an amenable number.

151253025021 is a deficient number, since it is larger than the sum of its proper divisors (102893215041).

151253025021 is a wasteful number, since it uses less digits than its factorization.

151253025021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342977401 (or 342977391 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 151253025021 its reverse (120520352151), we get a palindrome (271773377172).

The spelling of 151253025021 in words is "one hundred fifty-one billion, two hundred fifty-three million, twenty-five thousand, twenty-one".