1825951397 has 2 divisors, whose sum is σ = 1825951398. Its totient is φ = 1825951396.

The previous prime is 1825951381. The next prime is 1825951537. The reversal of 1825951397 is 7931595281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 982571716 + 843379681 = 31346^2 + 29041^2 .

It is an emirp because it is prime and its reverse (7931595281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1825951397 - 2⁴ = 1825951381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1825951307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912975698 + 912975699.

It is an arithmetic number, because the mean of its divisors is an integer number (912975699).

Almost surely, 2^1825951397 is an apocalyptic number.

It is an amenable number.

1825951397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1825951397 is an equidigital number, since it uses as much as digits as its factorization.

1825951397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 50.

The square root of 1825951397 is about 42731.1525353576. The cubic root of 1825951397 is about 1222.2585138942.

The spelling of 1825951397 in words is "one billion, eight hundred twenty-five million, nine hundred fifty-one thousand, three hundred ninety-seven".