25001401 has 2 divisors, whose sum is σ = 25001402. Its totient is φ = 25001400.

The previous prime is 25001387. The next prime is 25001453. The reversal of 25001401 is 10410052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13133376 + 11868025 = 3624^2 + 3445^2 .

It is a cyclic number.

It is not a de Polignac number, because 25001401 - 2⁵ = 25001369 is a prime.

It is not a weakly prime, because it can be changed into another prime (25001461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500700 + 12500701.

It is an arithmetic number, because the mean of its divisors is an integer number (12500701).

Almost surely, 2^25001401 is an apocalyptic number.

It is an amenable number.

25001401 is a deficient number, since it is larger than the sum of its proper divisors (1).

25001401 is an equidigital number, since it uses as much as digits as its factorization.

25001401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 25001401 is about 5000.1400980373. The cubic root of 25001401 is about 292.4072357844.

Adding to 25001401 its reverse (10410052), we get a palindrome (35411453).

The spelling of 25001401 in words is "twenty-five million, one thousand, four hundred one".