202512054457 has 2 divisors, whose sum is σ = 202512054458. Its totient is φ = 202512054456.

The previous prime is 202512054431. The next prime is 202512054467. The reversal of 202512054457 is 754450215202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128808492201 + 73703562256 = 358899^2 + 271484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202512054457 is a prime.

It is a super-2 number, since 2×202512054457² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202512054467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101256027228 + 101256027229.

It is an arithmetic number, because the mean of its divisors is an integer number (101256027229).

Almost surely, 2^202512054457 is an apocalyptic number.

It is an amenable number.

202512054457 is a deficient number, since it is larger than the sum of its proper divisors (1).

202512054457 is an equidigital number, since it uses as much as digits as its factorization.

202512054457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112000, while the sum is 37.

Adding to 202512054457 its reverse (754450215202), we get a palindrome (956962269659).

The spelling of 202512054457 in words is "two hundred two billion, five hundred twelve million, fifty-four thousand, four hundred fifty-seven".