100540025 has 6 divisors (see below), whose sum is σ = 124669662. Its totient is φ = 80432000.

The previous prime is 100540019. The next prime is 100540031. The reversal of 100540025 is 520045001.

It is an interprime number because it is at equal distance from previous prime (100540019) and next prime (100540031).

It can be written as a sum of positive squares in 3 ways, for example, as 28697449 + 71842576 = 5357^2 + 8476^2 .

It is not a de Polignac number, because 100540025 - 2⁴ = 100540009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100539985 and 100540012.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2010776 + ... + 2010825.

It is an arithmetic number, because the mean of its divisors is an integer number (20778277).

Almost surely, 2^100540025 is an apocalyptic number.

It is an amenable number.

100540025 is a deficient number, since it is larger than the sum of its proper divisors (24129637).

100540025 is an equidigital number, since it uses as much as digits as its factorization.

100540025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021611 (or 4021606 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 100540025 is about 10026.9648947226. The cubic root of 100540025 is about 464.9929085133.

Adding to 100540025 its reverse (520045001), we get a palindrome (620585026).

The spelling of 100540025 in words is "one hundred million, five hundred forty thousand, twenty-five".